29 places · sun position · panel angle
Solar data for Austria
Across the 29 places in Austria the best fixed tilt for solar panels runs from 37° in Vienna to 41° in Innsbruck, and flat ground gets 3.2 to 3.5 peak sun hours a day. Every number is computed for each place.
Solar power in Austria at a glance
Averages over 29 places with climate data, for a fixed array facing south.
- 3.22–3.27
- 3.27–3.31
- 3.31–3.36
- 3.36–3.41
- 3.41–3.45
Peak sun hours a day on flat ground. Each dot is one place.
The sunniest place in Austria is Villach (Carinthia) with 3.45 peak sun hours a day on flat ground; the least sunny are Linz and 4 other places with 3.22. A 1 kWp array at its best angle makes from 1,174 kWh a year in Linz to 1,284 kWh in Villach — 1,220 kWh on average.
The best year-round tilt runs from 37° in Vienna to 41° in Innsbruck. Off-grid systems are sized for the darkest month and do better steeper, at 72° on average: at 70° that month brings 1.54 kWh per kWp a day in Stockerau and 2.47 kWh in Innsbruck.
Size an off-grid system or open any place below for its sun path, monthly table and tilt curve.
Sunniest places in Austria
Ranked by peak sun hours on flat ground: the yearly average of a day's sunshine energy (NASA POWER climatology). Output: 1 kWp at its best year-round angle.
| Rank | Place | Region | Sun hours/day | kWh per kWp a year | Best tilt |
|---|---|---|---|---|---|
| 1 | Villach | Carinthia | 3.45 | 1,284 | 40° |
| 2 | Klagenfurt am Wörthersee | Carinthia | 3.44 | 1,266 | 39° |
| 3 | Bludenz | Vorarlberg | 3.43 | 1,280 | 40° |
| 4 | Feldkirch | Vorarlberg | 3.43 | 1,266 | 39° |
| 4 | Eisenzicken | Burgenland | 3.43 | 1,232 | 37° |
| 6 | Hohenems | Vorarlberg | 3.41 | 1,253 | 39° |
| 7 | Innsbruck | Tyrol | 3.40 | 1,283 | 41° |
| 7 | Dornbirn | Vorarlberg | 3.40 | 1,248 | 39° |
| 7 | Lustenau | Vorarlberg | 3.40 | 1,246 | 38° |
| 10 | Telfs | Tyrol | 3.39 | 1,278 | 41° |
Least sunny places in Austria
Solar by region in Austria
Averages of the places in each region, sunniest first. Darkest month: what 1 kWp of off-grid panels at 70° makes a day in the worst month of the year.
| Region | Places | Sun hours/day | kWh per kWp a year | Best tilt | Darkest month at 70° | Sunniest place |
|---|---|---|---|---|---|---|
| Carinthia | 3 | 3.43 | 1,263 | 39° | 2.24 kWh | Villach |
| Burgenland | 1 | 3.43 | 1,232 | 37° | 1.76 kWh | Eisenzicken |
| Vorarlberg | 6 | 3.41 | 1,255 | 39° | 2.09 kWh | Bludenz |
| Tyrol | 2 | 3.39 | 1,280 | 41° | 2.46 kWh | Innsbruck |
| Styria | 1 | 3.34 | 1,220 | 39° | 2.08 kWh | Graz |
| State of Vienna | 1 | 3.32 | 1,192 | 37° | 1.56 kWh | Vienna |
| Lower Austria | 8 | 3.30 | 1,190 | 38° | 1.63 kWh | Wiener Neustadt |
| State of Salzburg | 2 | 3.26 | 1,216 | 40° | 2.12 kWh | Saalfelden am Steinernen Meer |
| Upper Austria | 5 | 3.23 | 1,179 | 39° | 1.74 kWh | Wels |
Largest places in Austria at a glance
| Place | Latitude | Best tilt | Off-grid tilt | Sun hours/day (flat) |
|---|---|---|---|---|
| Vienna | 48.2° N | 37° | 72° | 3.32 |
| Graz | 47.1° N | 39° | 72° | 3.34 |
| Linz | 48.3° N | 38° | 72° | 3.22 |
| Salzburg | 47.8° N | 40° | 76° | 3.25 |
| Innsbruck | 47.3° N | 41° | 67° | 3.40 |
| Klagenfurt am Wörthersee | 46.6° N | 39° | 71° | 3.44 |
| Villach | 46.6° N | 40° | 64° | 3.45 |
| Eisenzicken | 47.3° N | 37° | 71° | 3.43 |
| Dornbirn | 47.4° N | 39° | 72° | 3.40 |
| Wiener Neustadt | 47.8° N | 38° | 72° | 3.35 |
| Steyr | 48.0° N | 39° | 76° | 3.22 |
| Feldkirch | 47.2° N | 39° | 72° | 3.43 |
| Bregenz | 47.5° N | 38° | 72° | 3.39 |
| Baden | 48.0° N | 38° | 72° | 3.33 |
| Traun | 48.2° N | 39° | 72° | 3.23 |
| Wolfsberg | 46.8° N | 38° | 72° | 3.39 |
| Lustenau | 47.4° N | 38° | 72° | 3.40 |
| Sankt Pölten | 48.2° N | 38° | 72° | 3.23 |
| Mödling | 48.1° N | 38° | 72° | 3.33 |
| Ansfelden | 48.2° N | 39° | 72° | 3.22 |
Daylight and clock time in Austria
In Stockerau (48.4° N), the northernmost place, the longest day of the year lasts 16 h 06 min and the shortest 8 h 19 min; in Villach (46.6° N), the southernmost, 15 h 50 min and 8 h 34 min. The clocks change twice a year: forward on Sun 29 Mar, back on Sun 25 Oct (Europe/Vienna).
| Time zone | Places | UTC offset | Clocks change in 2026 |
|---|---|---|---|
| Europe/Vienna | 29 | UTC+1, in summer UTC+2 | Forward on Sun 29 Mar, back on Sun 25 Oct |